Display screen or portion thereof with a graphical user interface



The patent file contains at least one drawing executed in color. Copiesof this patent with color drawings will be provided by the Office uponrequest and payment of the necessary fee.

The single FIGURE is a front view of the display screen or portionthereof with a graphical user interface showing the claimed design.

The outermost broken lines in FIGURE shows a display screen or portionthereof, and form no part of the claimed design. The broken line showingof text forms no part of the claimed design.

The grayscale shows a contrasting appearance.

CLAIM We claim the ornamental design for a display screen or portionthereof with a graphical user interface, as shown and described.